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IC900.2 Frequency Expansion Modifications for the ICOM IC-900 All changes are made in the control head. Diodes are arranged in a 8x4 array: A-H, 1-4. As shipped from the factory, the diodes are arranged thusly: X = diode in place ____________________________________ | | X | X | | | | | X | 4 |---|---|---|---|---|---|---|---|--- | | X | | X | | | | | 3 |---|---|---|---|---|---|---|---|--- | | X | | | | X | | X | 2 |---|---|---|---|---|---|---|---|--- | | | | | | | | X | 1 |---|---|---|---|---|---|---|---|--- | A | B | C | D | E | F | G | H | To add receive coverage on 6 meter and 70 cm bands only: C=cut diode, or remove ____________________________________ | | C | X | | | | | X | 4 |---|---|---|---|---|---|---|---|--- | | X | | C | | | | | 3 |---|---|---|---|---|---|---|---|--- | | X | | | | X | | X | 2 |---|---|---|---|---|---|---|---|--- | | | | | | | | X | 1 |---|---|---|---|---|---|---|---|--- | A | B | C | D | E | F | G | H | CONTINUED IN FILE IC900.3